The UGREEN 80111 USB 2.0 to RS-232 (DB9) adapter lets you connect serial devices like modems, POS systems, printers, and industrial equipment to modern PCs. Compact, bus-powered, supports Windows, macOS, Linux, with speeds up to 1 Mbps. No cable included.
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Connect legacy RS-232 devices to modern computers with this compact USB-to-Serial (DB9) adapter. It draws power directly from USB (no external adapter required) and is ideal for POS systems, industrial equipment, barcode scanners, label/tax printers, modems, and more.
| Brand | UGREEN |
| Model | CM326 |
| SKU / Code | 80111 |
| USB Standard | USB 2.0 Type-A |
| Serial Port | RS-232 DB9 (female, 9-pin) |
| Chipset | Prolific PL2303 series |
| Max Data Rate | ~1 Mbps |
| Flow Control | Hardware (RTS/CTS), Modem (DTR/DSR) |
| Power | USB bus-powered |
| OS Support | Windows, macOS, Linux |
| Cable Included | No (adapter-only) |
| Warranty | 12 months (may vary by region) |
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