StarTech.com 4 Port RS232 Mini PCI Express Serial Card w- 16650 USB 3.1 (10Gbps) Adapter Cable for 2.5" SATA SSD/HDD Drives it also passes through the

it also passes through the audio signal

The extender also supports 7

Serial presence detect with EEPROM

5mm audio extension cable features molded PVC strain relief at each of the 1/8"" TRRS connectors

Maximum Fiber Cable length of 40 Km

StarTech.com 4 Port RS232 Mini PCI Express Serial Card w- 16650 USB 3.1 (10Gbps) Adapter Cable for 2.5" SATA SSD/HDD Drives it also passes through theThe MPEX4S952 4 Port RS232 Mini PCI Express Serial Card (16650 UART) turns a mini PCIe slot into four RS232 (DB9) serial ports with data rates up to 921. 6 Kbps a cost saving solution for adding serial support to embedded systems missing the functionality. A native PCIe single chip design enables you to take advantage of full PCI Express bus capability, by providing improved speed and reliability while reducing the load applied to the CPU by as much