ARM-USB-OCD-H is very popular OpenOCD debugger supported by almost all IDEs and platforms. It’s in the Application notes of Intel and ARM processor vendors.
The ARM-USB-OCD-H initial design was made many years ago and some parts are obsolete like the USB-B to USB-A cable, big plastic shell from centronic 36/36 connectors etc.
As the centronic plastic became unavailable this year we decided that it’s good time to re-design ARM-USB-OCD-H completely.
Smaller and more compact plastic box is used. The USB connector now is USB-C, so popular USB phone cables can be used.
Our recommendation is customer to move to ARM-USB-OCD-HL it’s completely same as ARM-USB-OCD-H but supports targets with voltage levels from 0.65-5.5V
olimex 
Mar 17, 2022 @ 20:31:37
ARM-USB-OCD-HL is shown as “Out of stock” on the web shop – are you currently building a batch of boards or this is just an error on the site?
BTW, the new box seems to reuse the casing from some old connectors/cables too – is this sustainable enough for the long term, why didn’t you choose some standard rectangular box of fitting size instead?