One terminal (video, VT 220 Monitor hardcopy, or graphics) is necessary as a console for a system to function. Total terminals should not exceed two plus additional number of serial lines selected in Step 9. All keyboard kits and most terminals are 120 V. Refer to Table 1.22 for non-120-V alternate-language keyboards and terminals. VT 220 Monitor-BA Hardcopy I/O terminals recommended as Hardcopy terminal, 120 V VT 220 Monitor -BB Hardcopy terminal, 240 V console terminals. VT 220 Monitor -DA Hardcopy terminal, 120/240 V - VT 220 Monitor -D2 B and W video terminal, 120 V One keyboard is required for each video - VT220-D3 B and W video terminal, 240 V terminal ordered. - VT22K-AA US standard keyboard - VT22K-BA US WP keyboard See Table 1.22 for non-US keyboards. 0 VT240-A2 B and W graphics terminal, 120 V One keyboard is required for each VT240-A3 B and W graphics terminal, 240 V graphics terminal ordered. VT 220 Monitor -AA Color graphics terminal, 120 V VT24K-AA US standard keyboard See Table 1.22 for non-US models and VT 220 Monitor -BA US WP keyboard keyboards. LA75-CA 250-ch/s dot-matrix printer, Hardcopy output-only printers are not 120 V suitable as console terminals. LA75P-CA 250-ch/s dot-matrix printer, 120 V, parallel model See Table 1.10 for non-US models. (See LQP02-AA 32-ch/s LQP printer, 120 V page 6.15 for LA75 non-US models). LQPX2-AA Bidirectional forms tractor for LQP02 VT 220 Monitor -SF Single-tray sheetfeeder for LQP02 VT 220 Monitor -AA 240-ch/s dot-matrix printer,120 V LA21X-BT Bidirectional forms tractor for LA210 LA21X-SF Single-tray sheetfeeder for LA210, 8.5 by 11 VT 220 Monitor-SH Single-tray sheetfeeder for LA210, A4 LNO3-AA 8-pp/min laser printer, 100/120 V VT 220 Monitor-A3 8-pp/min laser printer, 220/240 V