USER GUIDE
NI USB-622x/625x/628x OEM
M Series USB-6221/6225/6229/6251/6255/6259/6281/6289 OEM Devices
This document provides dimensions, pinouts, and information
about the connectors, switch, LEDs, and chassis ground of the National
Instruments USB-6221 OEM, USB-6225 OEM, USB-6229 OEM,
USB-6251 OEM, USB-6255 OEM, USB-6259 OEM, USB-6281 OEM,
and USB-6289 OEM devices. It also explains how to modify the USB
device name in Microsoft Windows.
Caution There are no product safety, electromagnetic compatibility (EMC), or
CE marking compliance claims made for the USB-622x/625x/628x OEM devices.
Conformity to any and all compliance requirements rests with the end product supplier.
Caution (USB-628x Devices) Exercise caution when placing USB-628x OEM devices inside
an enclosure. Auxiliary cooling may be necessary to keep the device under the maximum
ambient temperature rating of 45 °C, as specified in the NI 628x Specifications.
Figure 1 shows the USB-6221/6251/6281 OEM and
USB-6225/6229/6255/6259/6289 OEM devices.
USB-6221/6251/6281
USB-6225/6229/6255/6259/6289
Figure 1. USB-622x/625x/628x OEM Devices
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4X Ø 0.110 (2.79)
7X Ø 0.125 (3.18)
6.950 (176.53)
4x 6.718 (170.63)
6.270 (159.26)
6.140 (155.96)
5.930 (150.62)
6.140 (155.96)
5.290 (134.37)
0.396 (10.06)
0.304 (7.72)
0.256 (6.50)
0.116 (2.95)
0.000 (0.00)
0.304 (7.72)
0.200 (5.08)
0.436 (11.07)
0.392 (9.96)
0.362 (9.19)
0.162 (4.11)
0.062 (1.57)
0.000 (0.00)
0.609 (15.47)
0.515 (13.08)
0.442 (11.23)
2X Ø 0.140 Cutout
in Panel for LEDs
Ø 0.330 Cutout in Panel
for Power Connector
Figure 2. USB-6221/6251/6281 OEM Dimensions in Inches (Millimeters)
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Figure 3 shows the dimensions of the USB-6225/6229/6255/6259/6289
OEM device.
4X Ø 0.110 (2.79)
7X Ø 0.125 (3.18)
6.950 (176.53)
4x 6.718 (170.63)
6.270 (159.26)
6.140 (155.96)
5.930 (150.62)
5.839 (148.31)
5.499 (139.67)
6.140 (155.96)
5.290 (134.37)
0.396 (10.06)
0.304 (7.72)
0.256 (6.50)
0.116 (2.95)
0.000 (0.00)
0.304 (7.72)
0.200 (5.08)
0.436 (11.07)
0.392 (9.96)
0.362 (9.19)
0.162 (4.11)
0.062 (1.57)
0.000 (0.00)
0.609 (15.47)
0.515 (13.08)
0.442 (11.23)
2X Ø 0.140 Cutout
in Panel for LEDs
Ø 0.330 Cutout in Panel
for Power Connector
Figure 3. USB-6225/6229/6255/6259/6289 OEM Dimensions in Inches (Millimeters)
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I/O Connector Pinouts
Figures 4 through 9 show the connector pinouts for the USB-6221 OEM,
USB-6225 OEM, USB-6229 OEM, USB-6251 OEM, USB-6255 OEM,
USB-6259 OEM, USB-6281 OEM, and USB-6289 OEM devices.
Refer to the M Series User Manual at ni.com/manualsfor more
information about USB-622x/625x/628x signals and how to connect them.
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Bank 0
50-Pin Digital Connector
+5 V
50 49 +5 V
48 47 PFI 15
46 45 PFI 14
44 43 PFI 13
42 41 PFI 12
40 39 PFI 11
38 37 PFI 10
36 35 PFI 9
34 33 PFI 8
32 31 PFI 7
30 29 PFI 6
28 27 PFI 5
26 25 PFI 4
24 23 PFI 3
22 21 PFI 2
20 19 PFI 1
18 17 PFI 0
16 15 P0.7
14 13 P0.6
12 11 P0.5
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
Bank 0
10
8
9
7
5
3
1
P0.4
P0.3
P0.2
P0.1
P0.0
6
4
2
Bank 0
34-Pin Analog Connector
AI GND 34 33 AI 15
AI 7
32 31 AI GND
30 29 AI 6
AI 14
AI GND 28 27 AI 13
AI 5
26 25 AI GND
24 23 AI 4
AI 12
AI GND 22 21 AI 11
AI 3
20 19 AI GND
18 17 AI 2
AI 10
AI GND 16 15 AI 9
AI 1
AI 8
14 13 AI GND
12 11 AI 0
Bank 0
AI GND 10
9
7
5
3
1
AI SENSE
NC
AI GND
AI GND
AO 1
8
6
4
2
AO GND
AO GND
AO GND
AO 0
NC = No Connect
Figure 4. USB-6221 OEM Connector Pinout
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Bank 1
Bank 0
50-Pin Analog/Digital
Connectors
+5 V
50 49 +5 V
48 47 PFI 15
46 45 PFI 14
44 43 PFI 13
42 41 PFI 12
40 39 PFI 11
38 37 PFI 10
36 35 PFI 9
34 33 PFI 8
32 31 PFI 7
30 29 PFI 6
28 27 PFI 5
26 25 PFI 4
24 23 PFI 3
22 21 PFI 2
20 19 PFI 1
18 17 PFI 0
16 15 P0.7
14 13 P0.6
12 11 P0.5
AI 71
AI 78
50 49 AI 79
48 47 AI 70
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
AI GND 46 45 AI 69
AI 77
AI 68
AI 67
AI 74
44 43 AI 76
42 41 AI GND
40 39 AI 75
38 37 AI 66
AI GND 36 35 AI 65
AI 73
AI 64
AI 55
AI 62
34 33 AI 72
32 31 AI GND
30 29 AI 63
28 27 AI 54
AI GND 26 25 AI 53
Bank 1
Bank 0
AI 61
AI 52
AI 51
AI 58
24 23 AI 60
22 21 AI GND
20 19 AI 59
18 17 AI 50
AI GND 16 15 AI 49
AI 57
AI 48
AI 39
AI 46
AI GND
AI 45
AI 44
14 13 AI 56
12 11 AI GND
10
8
9
7
5
3
1
P0.4
P0.3
P0.2
P0.1
P0.0
10
8
9
7
5
3
1
AI 47
AI 38
AI 37
AI GND
AI 36
6
6
4
4
2
2
Bank 1
Bank 0
34-Pin Analog Connectors
AI 43
34 33 AI 35
AI GND 34 33 AI 15
AI GND 32 31 AI 34
AI 7
32 31 AI GND
30 29 AI 6
AI 42
AI 33
AI 32
AI 31
30 29 AI 41
28 27 AI GND
26 25 AI 40
24 23 AI 23
AI 14
AI GND 28 27 AI 13
AI 5
26 25 AI GND
24 23 AI 4
AI 12
AI GND 22 21 AI 22
AI GND 22 21 AI 11
AI 30
AI 21
AI 28
20 19 AI 29
18 17 AI GND
16 15 AI 20
AI 3
20 19 AI GND
18 17 AI 2
AI 10
AI GND 16 15 AI 9
AI GND 14 13 AI 27
AI 1
AI 8
14 13 AI GND
12 11 AI 0
AI 19
12 11 AI GND
Bank 1
Bank 0
AI 26
10
8
9
7
5
3
1
AI 18
AI GND 10
9
7
5
3
1
AI SENSE
NC
AI GND
AI 17
AI 25
AI GND
AI GND
AO 1
8
6
4
2
6
AI GND
AI 16
AO GND
AO GND
AO GND
AI 24
4
AI GND
2
AI SENSE 2
AO 0
NC = No Connect
Figure 5. USB-6225 OEM Connector Pinout
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Bank 1
Bank 0
50-Pin Digital Connectors
+5 V
50 49 +5 V
48 47 P0.31
46 45 P0.30
44 43 P0.29
42 41 P0.28
40 39 P0.27
38 37 P0.26
36 35 P0.25
34 33 P0.24
32 31 P0.23
30 29 P0.22
28 27 P0.21
26 25 P0.20
24 23 P0.19
22 21 P0.18
20 19 P0.17
18 17 P0.16
16 15 P0.15
14 13 P0.14
12 11 P0.13
+5 V
50 49 +5 V
48 47 PFI 15
46 45 PFI 14
44 43 PFI 13
42 41 PFI 12
40 39 PFI 11
38 37 PFI 10
36 35 PFI 9
34 33 PFI 8
32 31 PFI 7
30 29 PFI 6
28 27 PFI 5
26 25 PFI 4
24 23 PFI 3
22 21 PFI 2
20 19 PFI 1
18 17 PFI 0
16 15 P0.7
14 13 P0.6
12 11 P0.5
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
Bank 1
Bank 0
10
8
9
7
5
3
1
P0.12
P0.11
P0.10
P0.9
10
8
9
7
5
3
1
P0.4
P0.3
P0.2
P0.1
P0.0
6
6
4
4
2
P0.8
2
Bank 1
Bank 0
34-Pin Analog Connectors
AI GND 34 33 AI 31
AI GND 34 33 AI 15
AI 23
AI 30
32 31 AI GND
30 29 AI 22
AI 7
32 31 AI GND
30 29 AI 6
AI 14
AI GND 28 27 AI 29
AI GND 28 27 AI 13
AI 21
AI 28
26 25 AI GND
24 23 AI 20
AI 5
26 25 AI GND
24 23 AI 4
AI 12
AI GND 22 21 AI 27
AI GND 22 21 AI 11
AI 19
AI 26
20 19 AI GND
18 17 AI 18
AI 3
20 19 AI GND
18 17 AI 2
AI 10
AI GND 16 15 AI 25
AI GND 16 15 AI 9
AI 17
AI 24
14 13 AI GND
12 11 AI 16
AI 1
AI 8
14 13 AI GND
12 11 AI 0
Bank 1
Bank 0
AI GND 10
9
7
5
3
1
AI SENSE 2
NC
AI GND 10
9
7
5
3
1
AI SENSE
NC
AI GND
AI GND
AO 3
8
6
4
2
AI GND
AI GND
AO 1
8
6
4
2
AO GND
AO GND
AO GND
AO GND
AO GND
AO GND
AO 2
AO 0
NC = No Connect
NC = No Connect
Figure 6. USB-6229 OEM Connector Pinout
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Bank 0
50-Pin Digital Connector
+5 V
50 49 +5 V
48 47 PFI 15
46 45 PFI 14
44 43 PFI 13
42 41 PFI 12
40 39 PFI 11
38 37 PFI 10
36 35 PFI 9
34 33 PFI 8
32 31 PFI 7
30 29 PFI 6
28 27 PFI 5
26 25 PFI 4
24 23 PFI 3
22 21 PFI 2
20 19 PFI 1
18 17 PFI 0
16 15 P0.7
14 13 P0.6
12 11 P0.5
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
Bank 0
10
8
9
7
5
3
1
P0.4
P0.3
P0.2
P0.1
P0.0
6
4
2
Bank 0
34-Pin Analog Connector
AI GND 34 33 AI 15
AI 7
32 31 AI GND
30 29 AI 6
AI 14
AI GND 28 27 AI 13
AI 5
26 25 AI GND
24 23 AI 4
AI 12
AI GND 22 21 AI 11
AI 3
20 19 AI GND
18 17 AI 2
AI 10
AI GND 16 15 AI 9
AI 1
AI 8
14 13 AI GND
12 11 AI 0
Bank 0
AI GND 10
9
7
5
3
1
AI SENSE
APFI 0
AI GND
AI GND
AO 1
8
6
4
2
AO GND
AO GND
AO GND
AO 0
Figure 7. USB-6251/6281 OEM Connector Pinout
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Bank 1
Bank 0
50-Pin Analog/Digital
Connectors
+5 V
50 49 +5 V
48 47 PFI 15
46 45 PFI 14
44 43 PFI 13
42 41 PFI 12
40 39 PFI 11
38 37 PFI 10
36 35 PFI 9
34 33 PFI 8
32 31 PFI 7
30 29 PFI 6
28 27 PFI 5
26 25 PFI 4
24 23 PFI 3
22 21 PFI 2
20 19 PFI 1
18 17 PFI 0
16 15 P0.7
14 13 P0.6
12 11 P0.5
AI 71
AI 78
50 49 AI 79
48 47 AI 70
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
AI GND 46 45 AI 69
AI 77
AI 68
AI 67
AI 74
44 43 AI 76
42 41 AI GND
40 39 AI 75
38 37 AI 66
AI GND 36 35 AI 65
AI 73
AI 64
AI 55
AI 62
34 33 AI 72
32 31 AI GND
30 29 AI 63
28 27 AI 54
AI GND 26 25 AI 53
Bank 1
Bank 0
AI 61
AI 52
AI 51
AI 58
24 23 AI 60
22 21 AI GND
20 19 AI 59
18 17 AI 50
AI GND 16 15 AI 49
AI 57
AI 48
AI 39
AI 46
AI GND
AI 45
AI 44
14 13 AI 56
12 11 AI GND
10
8
9
7
5
3
1
P0.4
P0.3
P0.2
P0.1
P0.0
10
8
9
7
5
3
1
AI 47
AI 38
AI 37
AI GND
AI 36
6
6
4
4
2
2
Bank 1
Bank 0
34-Pin Analog Connectors
AI 43
34 33 AI 35
AI GND 34 33 AI 15
AI GND 32 31 AI 34
AI 7
32 31 AI GND
30 29 AI 6
AI 42
AI 33
AI 32
AI 31
30 29 AI 41
28 27 AI GND
26 25 AI 40
24 23 AI 23
AI 14
AI GND 28 27 AI 13
AI 5
26 25 AI GND
24 23 AI 4
AI 12
AI GND 22 21 AI 22
AI GND 22 21 AI 11
AI 30
AI 21
AI 28
20 19 AI 29
18 17 AI GND
16 15 AI 20
AI 3
20 19 AI GND
18 17 AI 2
AI 10
AI GND 16 15 AI 9
AI GND 14 13 AI 27
AI 1
AI 8
14 13 AI GND
12 11 AI 0
AI 19
12 11 AI GND
Bank 1
Bank 0
AI 26
10
8
9
7
5
3
1
AI 18
AI GND 10
9
7
5
3
1
AI SENSE
APFI 0
AI GND
AI 17
AI 25
AI GND
AI GND
AO 1
8
6
4
2
6
AI GND
AI 16
AO GND
AO GND
AO GND
AI 24
4
AI GND
2
AI SENSE 2
AO 0
Figure 8. USB-6255 OEM Connector Pinout
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Bank 1
Bank 0
50-Pin Digital Connectors
+5 V
50 49 +5 V
48 47 P0.31
46 45 P0.30
44 43 P0.29
42 41 P0.28
40 39 P0.27
38 37 P0.26
36 35 P0.25
34 33 P0.24
32 31 P0.23
30 29 P0.22
28 27 P0.21
26 25 P0.20
24 23 P0.19
22 21 P0.18
20 19 P0.17
18 17 P0.16
16 15 P0.15
14 13 P0.14
12 11 P0.13
+5 V
50 49 +5 V
48 47 PFI 15
46 45 PFI 14
44 43 PFI 13
42 41 PFI 12
40 39 PFI 11
38 37 PFI 10
36 35 PFI 9
34 33 PFI 8
32 31 PFI 7
30 29 PFI 6
28 27 PFI 5
26 25 PFI 4
24 23 PFI 3
22 21 PFI 2
20 19 PFI 1
18 17 PFI 0
16 15 P0.7
14 13 P0.6
12 11 P0.5
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
Bank 1
Bank 0
10
8
9
7
5
3
1
P0.12
P0.11
P0.10
P0.9
10
8
9
7
5
3
1
P0.4
P0.3
P0.2
P0.1
P0.0
6
6
4
4
2
P0.8
2
Bank 1
Bank 0
34-Pin Analog Connectors
AI GND 34 33 AI 31
AI GND 34 33 AI 15
AI 23
AI 30
32 31 AI GND
30 29 AI 22
AI 7
32 31 AI GND
30 29 AI 6
AI 14
AI GND 28 27 AI 29
AI GND 28 27 AI 13
AI 21
AI 28
26 25 AI GND
24 23 AI 20
AI 5
26 25 AI GND
24 23 AI 4
AI 12
AI GND 22 21 AI 27
AI GND 22 21 AI 11
AI 19
AI 26
20 19 AI GND
18 17 AI 18
AI 3
20 19 AI GND
18 17 AI 2
AI 10
AI GND 16 15 AI 25
AI GND 16 15 AI 9
AI 17
AI 24
14 13 AI GND
12 11 AI 16
AI 1
AI 8
14 13 AI GND
12 11 AI 0
Bank 1
Bank 0
AI GND 10
9
7
5
3
1
AI SENSE 2
APFI 1
AI GND 10
9
7
5
3
1
AI SENSE
APFI 0
AI GND
AI GND
AO 3
8
6
4
2
AI GND
AI GND
AO 1
8
6
4
2
AO GND
AO GND
AO GND
AO GND
AO GND
AO GND
AO 2
AO 0
Figure 9. USB-6259/6289 OEM Connector Pinout
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Default Counter/Timer Pinouts
By default, NI-DAQmx routes the counter/timer inputs and outputs to the
PFI pins, shown in Table 1.
Table 1. NI-DAQmx Default Counter/Timer Pins
Counter/Timer Signal
CTR 0 SRC
CTR 0 GATE
CTR 0 AUX
CTR 0 OUT
CTR 0 A
Default Terminal Name
PFI 8
PFI 9
PFI 10
PFI 12
PFI 8
CTR 0 Z
PFI 9
CTR 0 B
PFI 10
PFI 3
CTR 1 SRC
CTR 1 GATE
CTR 1 AUX
CTR 1 OUT
CTR 1 A
PFI 4
PFI 11
PFI 13
PFI 3
CTR 1 Z
PFI 4
CTR 1 B
PFI 11
PFI 14
FREQ OUT
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Attaching External LEDs
state. The green READY LED indicates when the device is powered on and
configured as a USB device. The yellow ACTIVE LED indicates USB bus
activity.
Three connectors on the device allow you to connect an external LED
circuit to the device, as shown in Figure 10. To connect an external READY
LED, use E1 as the positive connection (+3.3 V) and E2 as the negative
connection. To connect an external ACTIVE LED, use E1 as the positive
connection and E3 as the negative connection. E1 is current limited with
a 100 Ω resistor to the 3.3 V internal supply. This configuration limits
the current to approximately 16 mA into a single external LED or
approximately 8 mA each when both LEDs are lit. You also can limit this
current further by using external resistors, also shown in Figure 10.
OEM (On-Board)
3.3 V
E3
E2
E1
100 Ω
E3
E2
E1
External External
READY ACTIVE
LED
LED
Figure 10. Schematic for External LED Circuits
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Power Switch
The power switch on the USB-622x/625x/628x OEM device powers the
device on and off. Figure 11 shows the pins on the power switch and
circuitry.
100 kΩ
to Ground
VDC Out
VDC In
3
2
1
J4/J6/J8
SW1
Switch
NC NC
100 kΩ
Outer
Shell
J4/J6/J8
XF1
SW1
2
1
Power to
Device
Power
Connector
FUSE
3
100 kΩ
Figure 11. Schematic for the Power Switch
Pin 1, VDC In, is connected to VDC through the fuse (reference designator
XF1). The VDC is the voltage provided by the power supply through the
power connector (reference designator J4/J6/J81) and must be 11–30 VDC,
20 W.
Pin 2, VDC Out, provides power to the circuitry on the device. When the
switch is in the On position, the VDC power supply from pin 1 is routed to
pin 2.
Pin 3, 100 kΩ to Ground, connects pin 2 to ground through a 100 kΩ
resistor when the switch is in the Off position.
1
The power connector is designated as J4 on USB-6225/6255 OEM devices, J6 on USB-6221/6229 OEM devices, and J8 on
USB-6251/6259/6281/6289 OEM devices.
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Connecting the USB-622x/625x/628x OEM Device to
Your Chassis
The USB-622x/625x/628x OEM device includes several plated mounting
holes that are designed for customer grounded connections, as shown in
Figure 12.
Caution Do not use the holes labeled A in Figure 12 as mounting holes.
A
A
A
Mounting Hole Connected
to Chassis Ground
Do Not Use These
as Mounting Holes
A
Figure 12. Customer Mounting Holes
(USB-6225/6229/6255/6259/6289 OEM Shown)
Caution (USB-628x Devices) Exercise caution when placing USB-628x OEM devices inside
an enclosure. Auxiliary cooling may be necessary to keep the device under the maximum
ambient temperature rating of 45 °C, as specified in the NI 628x Specifications.
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Replacing Fuses
USB-622x/625x/628x OEM devices have a replaceable T 2A 250V
(5 × 20 mm) fuse that protects the device from overcurrent through the
power connector.
(USB-628x Devices Only) USB-628x OEM devices also have a replaceable
F 2A 125V fuse that protects the device from overcurrent through the +5 V
terminal(s).
Replacement fuse information can be found in Table 2. To replace a broken
fuse in USB-622x/625x/628x OEM devices, complete the following steps.
1. Power down and unplug the device.
2. Replace the broken fuse while referring to Figure 13 for the fuse
locations.
2
1
1
2
T 2A 250V (5 x 20 mm) Fuse
F 2A 125V Fuse on USB-628x OEM Devices
Figure 13. USB-622x/625x/628x OEM Fuse Locations
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Device Components
Table 2 contains information about the components used for interfacing
and interacting with the USB-622x/625x/628x OEM device.
Table 2. USB-622x/625x/628x OEM Components
Manufacturer
Part Number
Component
LEDs
Reference Designator(s) on PCB
Manufacturer
Dialight
DS1
553-0332
34-pin connectors (USB-6221/6251/6281 OEM) J1
3M
N2534-6002RB
(USB-6225/6229/6255/6259/6289
OEM) J1, J2
50-pin connectors (USB-6221/6251/6281 OEM) P1
3M
N2550-6002UB
(USB-6225/6229/6255/6259/6289
OEM) P1, P2
USB connector
Power connector
J3
AMP
787780-1
722RA
(USB-6221/6229 OEM) J6
(USB-6225/6255 OEM) J4
(USB-6251/6259/6281/6289 OEM) J8
SW1
Switchcraft
Power switch
ITT Industries,
Cannon
E101J1A3QE2
T 2A 250V fuse
F 2A 125V fuse
XF1
Littelfuse
Littelfuse
Honda
218.002XP
(USB-6281/6289 OEM) F1
(USB-6221 OEM) J8
0453002
68-pin
connectors*
PCS-E68RLMD1+
(USB-6225/6229/6255 OEM) J7, J8
(USB-6251/6281 OEM) J7
(USB-6259/6289 OEM) J6, J7
* Optional mass termination connectors. These are not populated by default.
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Modifying the USB Device Name in Microsoft Windows
You can change how the USB-622x/625x/628x OEM device name appears
when users install the device in both the Found New Hardware Wizard that
appears when the device is initially installed and in the Windows Device
Manager.
Windows Vista/XP Users
Figure 14 depicts how a USB-6251 OEM device name appears in the
Found New Hardware Wizard and Windows Device Manager.
Figure 14. USB-6251 OEM Device in the Found New Hardware Wizard and
Device Manager (Windows Vista/XP)
To modify the device name in the Found New Hardware Wizard and
Windows Device Manager in Microsoft Windows Vista/XP, complete the
following steps.
Note You must have NI-DAQmx 8.7 or later installed on your PC.
1. Locate the OEMx.inffile in the y:\WINDOWS\inf\directory,
where xis the random number assigned to the INF file by Windows,
and y:\is the root directory where Windows is installed.
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Note New security updates to Microsoft Vista and NI-DAQ 8.6 or later create random INF
files for NI hardware. Windows assigns random file numbers to all INF files, which causes
the user to search through several INF files until the correct file is located.
If you want to revert back, save a copy of this file as
OEMx_original.infin a different location.
2. Edit the device INF file by opening OEMx.infwith a text editor.
At the bottom of this file are the descriptors where Windows looks to
identify the device. Locate the two lines of text that contain in quotes
the descriptors for the device name you are modifying. Change the
descriptor on both lines to the new device name, as shown in Figure 15.
Original File
Modified File
Figure 15. INF File Descriptors Changed to “My Device” (Windows Vista/XP)
3. Save and close the INF file.
4. Go to the Windows Device Manager.
(Windows Vista) In the Device Manager, notice that the OEM device
now appears as My Device, as shown in Figure 16.
(Windows XP) In the Device Manager, right-click the OEM device under
Data Acquisition Devices, and select Uninstall. Power down the OEM
device and disconnect the USB cable from your PC.
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When you reconnect and power on the device, it appears as My Devicein
the Found New Hardware Wizard and Windows Device Manager, as shown
in Figure 16.
Note When the device is initially installed, the Windows alert message may display the
following: Found New Hardware: M Series USB 62xx (OEM). This message appears
for a few seconds until the custom name appears and the Found New Hardware Wizard is
launched. This alert message device name cannot be changed.
Figure 16. “My Device” in the Found New Hardware Wizard and
Device Manager (Windows Vista/XP)
Note Modifying the INF file will not change the USB-622x/625x/628x OEM device name
in Measurement & Automation Explorer (MAX).
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Windows 2000 Users
Figure 17 depicts how a USB-6251 OEM device name appears in the
Found New Hardware Wizard and Windows Device Manager.
Figure 17. USB-6251 OEM Device in the Found New Hardware Wizard and
Device Manager (Windows 2000)
To modify the device name in the Found New Hardware Wizard and
Windows Device Manager in Windows 2000, complete the following steps.
Note You must have NI-DAQmx 8.7 or later installed on your PC.
1. Locate the nimioxsu.inffile in the x:\WINNT\inf\directory,
where x:\is the root directory where Windows is installed.
If you want to revert back, save a copy of this file as
nimioxsu_original.infin a different location.
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2. Edit the device INF file by opening nimioxsu.infwith a text editor.
At the bottom of this file are the descriptors where Windows looks to
identify the device. Locate the two lines of text that contain in quotes
the descriptors for the device name you are modifying. Change the
descriptor on both lines to the new device name, as shown in Figure 18.
Original File
Modified File
Figure 18. INF File Descriptors Changed to “My Device” (Windows 2000)
3. Save and close the INF file.
4. Go to the Windows Device Manager, right-click the OEM device under
Data Acquisition Devices, and select Uninstall.
5. Power down the OEM device and disconnect the USB cable from
your PC.
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When you reconnect and power on the device, it appears as My Devicein
the Found New Hardware Wizard and Windows Device Manager, as shown
in Figure 19.
Note When the device is initially installed, the Windows alert message may display the
following: Found New Hardware: M Series USB 62xx (OEM). This message appears
for a few seconds until the custom name appears and the Found New Hardware Wizard is
launched. This alert message device name cannot be changed.
Figure 19. “My Device” in the Found New Hardware Wizard and
Device Manager (Windows 2000)
Note Modifying the INF file will not change the USB-622x/625x/628x OEM device name
in Measurement & Automation Explorer (MAX).
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