ME745A-M-R2, ME771A-MSP-R2: (1) DB25 M, (1) 5-screw terminal block; ME771A-FSP-R2: (1) DB25 F, (1) 5-screw terminal block; ME772A-FSP-R2: (1) DB25 F, (1) RJ-11; ME773A-MSP-R2: (1) DB25 M, (1) RJ-45; ME773A-FSP-R2: (1) DB25 F, (1) RJ-45
ME745A-R2: 6 VDC from the RS-232 interface; DCE mode: Pins 4 or 20; ME771A-R2ME773A-R2: DTE mode: Pins 5, 6, 8, 9; DCE mode: Pins 4, 9, 20 (8 VDC)
ME745A-R2: RS-232 (DCE); ME771A-R2ME773A-R2: RS-232 (DTE or DCE)