Maximum modern control/data serial lines an the system is 49 and VAX 4000 Model 300. The Base Hardware System (Step 1) includes one serial line. leaves a maximum of 48 additional serial lines to choose as options. Note: Additional lines may be configured in the sys- tem if the cable concentrator-style (data only) cabinet kit is selected instead. Refer to this catalog for the additional configuration considerations necessary for the cable concentrator and VAX 4000 Model 300. [ — DHV11-M 8 serial lines The total number of RD53, RX50, DMV11, CK-DHV11-AF Cabinet kit DPV11, and DHV11 options cannot exceed six. [ 1 DHV11-M CK- 8 serial lines DHV11-WF Cabinet kit (RS-423, MMJ, cable concentrator, no modeln) [ ] 1 DEQNA-M Ethernet communications controller Required for all networking implementations. 1 CK-DEQNA-DF Cabinet kit [ 1 DESTA-AA Ethernet-to Thin Ethernet transceiver Required for all Thin Ethernet implementations. cable adapter 1 BNE3D-05 Ethernet transceiver cable 1 BC16K-10 Thin Ethernet cable [ ] — H4000 Ethernet transceiver all for VAX 4000 Model 300