GeneSysGroup, E125B 1U Mini-ITX 19" rackmount server chassis. The multi-core processors of Mini-ITX platform have been the current mainstream nowadays, the E125 1U Mini-ITX server chassis' depth is 250mm only, and the
Server case rackmount chassis 19 inch IPC mini-ITX 2U 4x3.5 inch depth 360mm - Cablematic
Netrack mini-ITX server case, 482*44.5*250mm, 1U, 19''
Inteset TX482-1U: Fitting 2 Mini-ITX Systems In A 1U Slot Review - Phoronix
19 inch 2U mini-ITX case for Dual Mini-ITX short depth rack mountable - MyElectronics
mini-itx.com: IN WIN RF100S 1U Short Depth Mini-ITX Server Chassis 265W case
Completed my first SFF PC build inside a new 2U Mini ITX rackmount case! : r/sffpc