English-language diagnostics and Optional for -A2 and -A3. Included in documentation on TK50 media DH-153Q8-AA. English-language diagnostics and documentation on RX50 media 0.5-Mbyte MOS memory Maximum allowable memory is 4 Mbytes 1-Mbyte MOS memory per system. 1.5 Mbytes is included in the 2-Mbyte MOS memory Base Hardware System. 20-Mbyte fixed-disk drive Choose only one. 42-Mbyte fixed-disk drive 159-Mbyte rackmount disk drive Choose up to two. 71-Mbyte rackmount disk drive 31-Mbyte rackmount disk drive RDQX3 extender module Rackmount kit 95-Mbyte rackmount tape drive Choose only one. VNswitch 900EE controller Ethernet interface Choose only one. Cabinet kit m is 26. The Base Hardware System (Step 1) includes two serial lines. This leaves a nchronous serial lines to choose as options. 8 serial lines Choose up to three if no other inet kit with no modem asynchronous options are selected. control, VNswitch 900EE signalling DHV11 is not currently supported on supporting 8 remote 25-pin RT 11, CTS 300, or VNswitch 900EE /Pascal-RT. - - connections. VNswitch 900EE 8 serial lines Choose only one if no other asynchronous inet kit with full modem options are selected. VNswitch 900EE is not control, VNswitch 900EE signalling currently supported on ns RT-11, CTS-VNswitch 900EE, or MicroPower/Pascal-RT. on the bulkhead. 8 serial lines Choose up to three if no other binet kit with no modem asynchronous options are selected. control, VNswitch 900EE signalling VNswitch 900EE is not currently supported on supporting 8 remote MMJ RT 11, VNswitch 900EE 300, or MicroPower/Pascal-RT. - - VNswitch 900EE connections.