Highlights
View all details
- USB 2.0
- Data transfer rate: Up to 921600 baud, USB 2.0: 480 Mbps
- Ports: 2 x 9-pin DB-9 male RS-232 serial
Brainboxes 2 Port RS232 USB To Serial Adapter (US-257)
Item #: IM1DA1517Model #: US-257
No reviews yet
$139.91
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over
30
Free Returns
Online. In store. Always free.
Learn More
About this product
Brainboxes USB to serial adapter has data transfer rates up to 921.60 Kbps and features high retention USB socket.
Brainboxes USB to serial adapter features drivers for all popular operating systems including Windows 8. Adapter has external form factor and is PC platform supported with 2 x 9-pin DB-9 male RS-232 serial ports.
- USB 2.0
- Data transfer rate: Up to 921600 baud, USB 2.0: 480 Mbps
- Ports: 2 x 9-pin DB-9 male RS-232 serial
- Dimensions: 4" x 4.1" x 1.1"
- Form factor: External
- Power consumption: 100mA at 3.3V
- Serial port: Ports: 2, Protocol: RS232, Connector: DB9 connector - 9 pin male, Tx FIFO size: 128, Rx FIFO size: 384
- Operating distance: EIA - RS232 standard, Tx FIFO size: 128, Rx FIFO size: 384
- Max baud rate: 921600, Data bits: 7 or 8, Parity: odd, even, none, mark or space, Stop bits: 1 or 2, Flow control: RTS/CTS, DSR/DTR, Xon/Xoff
- Tx/Rx modes: Point to point
- PCB layers: 4
- Platform supported: PC
- Operating system: Microsoft Windows 7/Server 2008/Vista/Server 2003/XP/2000
- Certifications and standards: RoHS, WEEE
- Weight: 3.84 oz.
- Warranty: Lifetime limited
- Black
Staples TECH - exceptional performance at unmatched value
Price is $16.39
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $11.69
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $31.99
Next-Day Delivery by tomorrow
1-hr pickup
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $10.89
Next-Day Delivery by tomorrow
1-hr pickup
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $8.69
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $6.59
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $4.29
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $8.69
Next-Day Delivery by tomorrow
1-hr pickup
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $8.69
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $16.99
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $5.49
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Buy More, Save More of Staples TECH USB-C to USB-A Charging Cable, 6.5 ft., White (ST62338)
Price is $10.59
Next-Day Delivery by tomorrow
1-hr pickup
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $7.69
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $5.49
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $6.59
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $13.09
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $32.49
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $14.09
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $9.79
Delivery by Thu, Jul 17
1-hr pickup
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $13.99
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $15.89
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $21.69
Next-Day Delivery by tomorrow
1-hr pickup
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $17.39
Next-Day Delivery by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $11.99
Next-Day Delivery by tomorrow
1-hr pickup
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Compare similar items
| Attributes | Brainboxes 2 Port RS232 USB To Serial Adapter (US-257) | StarTech 2 Port USB 3.0 A Female Slot Plate Adapter, Blue | StarTech DB9 RS232 Serial Null Modem Adapter, F/F (NM9FF) | ||
|---|---|---|---|---|---|
Your product Brainboxes 2 Port RS232 USB To Serial Adapter (US-257) Price is $139.91 Out of Stock |  Price is $21.99 |  Price is $13.79 | |||
| Delivery Information | Data not available | Delivery by Wed, Jul 16 | Delivery by Wed, Jul 16 | ||
| Available in my store | No | No | No | ||
| Add To Cart | Add To Cart |
Featured Products
HP OmniDesk Desktop Computer, Intel Core i5-14400, 16GB RAM, 512GB SSD, Windows 11 Home, Mouse/Keyboard Included is New at Staples
Price is $549.99, Regular price was $709.99, You save 22%
Free delivery by Thu, Jul 17
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
HP 15.6" FHD Laptop, Intel Core i7-1355U, 16GB RAM, 512GB SSD, Backlit Keyboard, +9.75 hours battery, Windows 11 is New at Staples
Price is $599.99, Regular price was $859.99, You save 30%
Free Next-Day eligible by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
HP 27" All-in-One Desktop Computer, Intel Core i5-1334U, 8GB RAM, 256GB SSD, Windows 11 Home is New at Staples
Price is $679.99, Regular price was $759.99, You save 10%
Free Next-Day eligible by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
HP OmniBook 5 16" 2K AI Laptop, Intel Core Ultra 7 255U, 16GB RAM, 1TB SSD, +19.25 hours battery, Windows 11 Home is New at Staples
Price is $699.99, Regular price was $1,009.99, You save 30%
Free Next-Day eligible by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
HP OmniBook 7 Flip 16" FHD 2-in-1, Copilot+ PC, Intel Core Ultra 5, 16GB RAM, 512GB SSD,+ 23 hours battery, Windows 11 Home is New at Staples
Price is $649.99, Regular price was $999.99, You save 35%
Free Next-Day eligible by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
HP OmniBook 5 16" 2K Laptop, Copilot+ PC, AMD Ryzen AI 5 340, 16GB RAM, 512GB SSD, +16.75 hours battery, Windows 11 Home is New at Staples
Price is $539.99, Regular price was $819.99, You save 34%
Free Next-Day eligible by tomorrow
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $399.99
Free delivery
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $459.99
Free delivery
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $169.99
Free delivery
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $519.99
Free delivery
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $219.99
Free delivery
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $77.99
Free delivery by Tue, Jul 22
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $99.99
Free delivery by Tue, Jul 22
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $77.89
Free delivery by Tue, Jul 22
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Price is $99.99
Free delivery by Tue, Jul 22
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30