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| | StarTech.com PEX2S5531P 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART | FREE shipping |
| | StarTech.com PEX8S952 8 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART | FREE shipping |
| | StarTech.com 2 Port RS232 PCI Express Serial Card with Breakout Cable PEX2S553B | FREE shipping |
| | StarTech.com 2 Port 54mm ExpressCard RS232 Serial Adapter Card with 16550 UART EC2S55254 | FREE shipping |
| | StarTech.com 1S1P 54mm ExpressCard Serial Parallel Combo Card with 16550 UART EC1S1P55254 | FREE shipping |
| | SIIG 1-Port Industrial USB to RS-422/485 Serial Adapter Cable with 3KV Isolation |
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| | StarTech.com 2 Port Low Profile PCI Express Serial Card - 16550 |
| | StarTech.com 1 Port Low Profile PCI Express Serial Card - 16550 |
| | StarTech.com 4 Port RS232 PCI Express Serial Card w/ Breakout Cable |
| | SIIG 2-Port Industrial USB to RS-422/485 Serial Adapter Cable with 3KV Isolation |
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| | SIIG 4-Port Industrial USB to RS-422/485 Serial Adapter Cable with 3KV Isolation |
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| | StarTech.com 2 Port RS232 PCI Express Serial Card w/ Breakout Cable |
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| | Syba SD-EXP15005 1x Serial RS232 Port Express Card with MCS9901 Chipset |