Note that the card may be slightly out of specs mechanically speaking, as mPCIe cards should not be larger than 30 x 51 x 6mm in size. That also means it should work with any Rockchip RK3399 board or product with a compatible mini PCIe socket. Sometimes hardware is launched without software support, but RM310 LTE module support was enabled in Rockchip Linux in March 2020, so hopefully, it’s working well out of the box as long as you run a recent kernel. But at this point, I can’t find any other RM310 cards. The back of the board has silkscreen reading “Rockchip RM310MINIPCIE_V01 GX”, so it might just be a product out of Rockchip instead of a card designed by Shenzhen Xunlong Software. Also, make sure to check the frequency bands are supported in your country/operator using sites such as Frequency Check. The three SpaceWire interfaces of the SpaceWire PCIe are each fully compliant to the SpaceWire standard and operate at up to 300 Mbits/s. Remember you’ll need the PCIe adapter board as well to connect the mini PCIe card. The SpaceWire PCI Express (PCIe) board provides three SpaceWire interfaces with the optimised host software supporting high bandwidth transmission of SpaceWire packets directly to and from the host PC. Host Interface – mPCIE socket with USB 2.0 signals.Antenna – DL MIMO with Rx diversity support.MPCIe card and RM310 module specifications: 4G mini PCIe cards can easily cost around $50 or more, but Shenzhen Xunlong Software has now launched its own 4G LTE mini PCIe card based on Rockchip RM310 module and sold for $16 on Aliexpress, excluding shipping.

The board also comes with a 24-pin PCIe connector that’s not of much use on its own, so the company introduced a $4 PCIe adapter board providing access to a standard mPCIe socket and a SIM card slot so you could install your own.

Orange Pi 4 SBC is one of the most cost-effective Rockchip RK3399 SBC’s, as it sells for as low as $50 with 4GB RAM, Gigabit Ethernet, WiFi, and Bluetooth, HDMI 2.0 output, etc.

Minipcie to pcie s