Fits the Beelink SER8, SER9 and SER9 Pro in a 10" mini rack at 2U. Beelink reused the SER8 chassis for the SER9 series, so all three share one mount.FITS Beelink SER8 Beelink SER9 Beelink SER9 Pro DOES NOT FITThe earlier SER5, SER6 and SER7. Those are a different chassis.KEYSTONE OPTIONChoose one at checkout: No Keystones. Just the mount. +1 Keystone. One holder to the right of the mini PC, with an RJ45 keystone jack and an Ethernet cable included. +2 Keystones. One holder on each side of the mini PC, with two RJ45 keystone jacks and two Ethernet cables included. The jacks and cables come with the keystone options, so you can bring a network drop out to the front of the rack without sourcing the parts separately.WHAT YOU GET One 3D printed mount. The RJ45 keystone jacks and Ethernet cables that go with the option you pick. Rack screws are not included. Use whatever your rack takes. MATERIALPETG, not PLA. It holds its shape in a warm rack where PLA starts to soften.A 19" version of this mount is also listed in my shop. 💬 For any custom design requests please message me.