APC Easy-UPS Rack Mounting 2U SRV3KRIRK (SRV3KRI+SRVRK1), 3000VA/2400W, Double-conversion On-line UPS, 6 x IEC Sockets ( 6 IEC C13, all 6 Battery Backup + Surge Protected), Multifunction LCD Display, DB-9 RS-232, Smart-Slot, USB, with Rail Kit