Find of the day

Today I hauled in something that I have no experience whatsoever with, but that I'm sure most people in classiccmp own: a microvax II. I don't know if it works, or how to hook a terminal to it to test it. Here's what I've been able to gather: Cards: Slot description 1 CPU? it has two interesting-looking chips: 1: LSILIA 0485, 21-23413-01, DC379, TAC 8546 2: LSILIA 0486, 21-23389-01, DC379, CAC 8544 This is connected to a DB9M in the back panel (console goes here? what is the pinout? what is the funny-labeled rotary switch next to it?) 2 nemonix memory board, holds 56 TC511000AP-10 chips 3 dec memory board, holds 144 41256-212141302 chips 4 dec board, some labels are: LPWR M94V-1 25787, and "M7516" in the extraction handle; connected to a DB15F in the back panel 5 dec board, (disk controller?), reads M7555 in the extraction handle, connected to what seems to be an older RLL hard drive Hard drive: RD53-A rev A label in the back panel: Model: 630QB-A2 product variation: changed from 630QB-A2 to DH630Q4E2 by WFD. So what exactly is this beast and how can I test if it works? Best regards, Carlos.