Moxa - UPort 1250/1250I 2port RS232/422/485 Serial to USB Converter
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Features and Benefits
- Hi-Speed USB 2.0 for up to 480 Mbps USB transmission
- 921.6 Kbps maximum baudrate for super fast data transmission
- 128-byte FIFO and on-chip H/W, S/W flow control
- Additional I/O and IRQ not needed
- Certified drivers provided for Windows (including Vista), and WinCE 5.0
- Easy monitoring with LEDs and management software
- 15 KV ESD protection for all serial ports
- Choose bus power (UPort™ 1250) or external power (UPort™ 1250I)
Instant Plug & Play
The Moxa UPort™ 1250/1250I USB-to-serial converters allow you to connect 2 RS-232/422/485 devices to your laptop or workstation through the USB (Universal Serial Bus) port. This plug & play USB solution is perfect for mobile, instrumentation, and point-of sale applications.
Simplified, Hassle-free Serial Port Expansion
USB plug & play makes serial port expansion easy, and does not require IRQ, DMA, or I/O address resources. Users no longer need to open the chassis or power down the system to add COM ports, saving on setup time and cost.
Top Serial Performance
Moxa’s 20-plus years of experience in serial board design is now built into a new top performance CPU called MOXA ART. This chip equips the UPort™ 1250/1250I converters with USB 2.0 (Hi-Speed 480 Mbps), a 128-byte FIFO, on-chip hardware and software flow control, and burst data mode, making Moxa’s UPort™ converters the top performing USB-to-serial converters in the world.
Make an enquiy about Moxa Serial to USB converters & adapters
| • USB | |
| Compliance | USB 1.1/2.0 compliant |
| Connector(s) | USB type B |
| Speed | 480 Mbps (Hi-Speed USB) and 12 Mbps (Full-Speed USB) |
| • Serial Interface | |
| Serial Standards | RS-232/422/485 |
| Number of Ports | 2 |
| Connectors | DB9 male |
| • Serial Line Protection | |
| ESD Protection | 15 KV embedded |
| Optical Isolation Protection | 2 KV (UPort™ 1250I only) |
| • Performance | |
| Baudrate | 50 bps to 921.6 Kbps |
| • Serial Communication Parameters | |
| Data Bits | 5, 6, 7, 8 |
| Stop Bits | 1, 1.5, 2 |
| Parity | None, Even, Odd, Space, Mark |
| Flow Control | RTS/CTS, XON/XOFF |
| I/O Address | Assigned by BIOS |
| IRQ | Assigned by BIOS |
| FIFO | 128 bytes |
| • Serial Signals | |
| RS-232 | TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND |
| RS-422 | TxD+(B), TxD-(A), RxD+(B), RxD-(A), GND |
| RS-485-4w | TxD+(B), TxD-(A), RxD+(B), RxD-(A), GND |
| RS-485-2w | Data+(B), Data-(A), GND |
| • Driver Support | |
| Operating Systems | Windows (2000, XP x86/x64, 2003 x86/x64, Vista x86/x64) and WinCE 5.0 |
| • Physical Characteristics | |
| Enclosure | SECC sheet metal (1 mm), IP30 protection |
| Weight | Product only: 180 g (0.40 lb) Packaged: 660 g (1.45 lb) |
| Dimensions | 77 x 26 x 111 mm (3.03 x 1.02 x 4.37 in) |
| • Environmental Limits | |
| Operating Temperature | 0 to 55°C (32 to 131°F) |
| Operating Humidity | 5 to 95% RH |
| Storage Temperature | -20 to 75°C (-4 to 167°F) |
| Regulatory Approvals | EN55022 Class A, EN55024, EN61000-3-2, EN61000-3-3, EN61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-5, EN61000-4-6, FCC Part 15 Class A, UL, CUL, TÜV |
| • Power Requirements | |
| Power Consumption | UPort™ 1250 (bus power): 360 mA @ 5 VDC UPort™ 1250I (12 to 48 VDC external power): 200 mA @ 12 VDC |
| • Warranty | |
| Warranty Period | 5 years |
| Details | See www.moxa.com/warranty |
| Ordering Info | Model No. | Description |
| Click here to order |
UPort 1250 |
USB to 2-port RS-232/422/485 Serial Hub |
| Click here to order |
UPort 1250I |
USB to 2-port RS-232/422/485 Serial Hub with 2 KV Isolation Protection |
| Ordering Info | Model No. | Description |
| Click here to order | Mini Female DB9 to Terminal Block |



