DECstation 5000/240 Thickwire Connector

Paul Koning paulkoning at
Wed Oct 4 18:18:09 CDT 2017

> On Oct 4, 2017, at 5:37 PM, Peter Coghlan via cctalk <cctalk at> wrote:
>> The thickwire connector on my DECstation 5000/240 does not have the sliding
>> lock on it, instead it has standoffs with threaded screw holes (like any
>> normal serial/parallel connector). This means that the thickwire adapters I
>> have won't connect properly because their locking studs are blocked by the
>> standoffs on the main board connector. I can remove the standoffs I suppose,
>> but I was just wondering if anyone has ever come across this before?
> This is also the case on the VAXStation/MicroVAX 2000 and on the (E?)ISA
> ethernet card in my Alphaserver 2100.
> Look for an AUI cable such as the BNE4E-02 which has screws on the right
> angle male end and a sliding lock on the straight through female end. 
> (I suspect the 02 could mean 2m long.)

The Pro machines also have this.  I suspect the reason is that the slide lock is hard to operate when attaching a cable to a large enclosure.  So yes, you need an adapter cable, or remove the standoffs and rely on friction.


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