| HARDWARE | |
| Mode Name | EM40021 | 
| Bus Type | Mini PCI Express | 
| Card Type | MiniPCI-e | 
| Chipset ID | Asix Moschip-MCS9922 | 
| Interface | Serial | 
| Port Numbers | 2 | 
| PERFORMANCE | |
| Data Bits | 5, 6, 7, 8 | 
| FIFO | 256 Bytes | 
| Max Baud Rate | 115.2 Kbps | 
| Flow Control | Hardware, Auto Xon/Xoff, None | 
| Parity | None, Even, Odd | 
| Serial Protocol | RS-422/485 | 
| CONNECTOR(S) | |
| Connector Type(s) | 1-MiniPCI Express Male | 
| External Ports | 2-DB-9 (9 pin, D-Sub) Male | 
| System Requirements | |
| Windows® XP Embedded, XP, Vista, 7, 8, 8.1, 10 Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016, 2019 Mac OS® 10.4 to 10.10 Linux 3.5.x to 4.11.x LTS Versions Only | |
| ENVIRONMENTAL | |
| Humidity | 5~85% RH | 
| Operating Temperature | 0°C to 70°C (32°F to 158°F) | 
| Storage Temperature | -20°C to 85°C (-4°F to 185°F) | 
| Certification | |
| CE – FCC – ROHS | |
| Point-of-Sale (POS credit/debit card readers, receipt printers, bar code scanners, cash registers, scales) | 
| Manufacturing (CNC machinery, process control equipment, bar code scanners, serial printers) | 
| Connect specialized serial devices (printers, scanners, ISDN terminal adapters and memory card readers) | 
| Environmental Control (lighting, temperature, clocks) | 
| Entertainment (video lottery terminals, slot machines, gaming systems) | 
| Healthcare (patient monitoring equipment, nurses’ stations, modems) | 
| Security (UPS control, access key panels, video cameras, card readers, modems) | 
| Hospitality/Restaurant (serial printers, bar code scanners, keyboard, mouse, receipt printer, credit/debit card reader) | 
| Consumer (modems, PDAs, digital cameras, printers)ISDN Networking |