Startech 4-port PCI Express RS232 Serial Adapter Card, PCIe RS232 Serial Host Controller Card, PCIe to Serial DB9 Card, 16950 UART, Desktop Expansion Card, Windows, macOS, Linux - Full/Low-Profile Brackets (PEX4S953) - Serial adapter - PCI Express x1 - RS-232 x 4
MPN PEX4S953 EAN 0065030888257 Startech
Trade customers only
£90.26 ex VAT
£108.31 inc VAT
In stock · 17 available
Manufacturer datasheet →
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Questions? 01224 600337 — Aberdeen & across the UK.
Fresh data: stock and pricing updated 22 Oct 2026.
Description
Manufacturer Code: PEX4S953
Overview
Startech 4-port PCI Express RS232 Serial Adapter Card, PCIe RS232 Serial Host Controller Card, PCIe to Serial DB9 Card, 16950 UART, Desktop Expansion Card, Windows, macOS, Linux - Full/Low-Profile Brackets (PEX4S953) - Serial adapter - PCI Express x1 - RS is available through DCS Components. It sits within the Cables & Adapters category.
Key product details
- Full/Low-Profile Brackets (PEX4S953)
- Serial adapter
- PCI Express x1
- RS
Procurement and setup support
Available for quote while live availability remains in stock. DCS can help with procurement, compatibility checks, configuration planning, installation support and long-term managed IT lifecycle support.
EAN: 0065030888257
Specifications
| Host interface | PCIe |
|---|---|
| Output interface | Serial |
| Expansion card form factor | Full-height / Low-profile |
| Serial ports quantity | 4 |
| Serial interface type | RS-232 |
| Internal | Yes |
|---|---|
| Product colour | Green |
| Mean time between failures (MTBF) | 214358 h |
| Certification | CE, FCC, Microsoft WHQL |
| Chipset | Asix AX99100 |
|---|---|
| Baud rate | 921.6 Kbit/s |
| FIFO (First In, First Out) | 256 B |
| Data bits | 5, 6, 7, 8, 9 |
| Stop bits | 1, 1.5, 2 |
| Parity bit | Even, Mark, No, Odd, Space |
| Flow Control type | No, RTS/CTS, XON/XOFF |
| Operating temperature (T-T) | -10 - 80 °C |
|---|---|
| Storage temperature (T-T) | -20 - 100 °C |
| Operating relative humidity (H-H) | 5 - 85% |
| Windows operating systems supported | Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 IoT Enterprise, Windows 10 Pro, Windows 10 Pro x64, Windows 10 x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64 |
|---|---|
| Linux operating systems supported | Yes |
| Server operating systems supported | Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 |
| Compliance certificates | RoHS |
|---|
| Width | 63 mm |
|---|---|
| Depth | 75 mm |
| Height | 15 mm |
| Weight | 50 g |
| Quantity | 1 |
|---|---|
| Cables included | Serial |
| Mounting brackets included | Yes |
| Quick installation guide | Yes |
| Package width | 150 mm |
| Package depth | 210 mm |
| Package height | 50 mm |
| Package weight | 371 g |
| Harmonized System (HS) code | 84733020 |
|---|---|
| Products per master (outer) case | 16 pc(s) |
| Master (outer) case width | 340 mm |
| Master (outer) case length | 480 mm |
| Master (outer) case height | 240 mm |
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