Hi guys, I'm totally new when it comes to pre-Pentium era hardware, can you help me identify some parts of this particular IBM 5155?

https://www.dropbox.com/sh/kl8t6v799dkfb1s/AA … IkOV-iftSa?dl=0

For now I understood it has:

a) RTC clock card
b) LPT port card - is it a standard LPT? Will it work with plain LPT peripherals?
c) Some kind of 10MB HDD including a controller card
d) A card with an unknown connector, doesn't say what it is
e) CGA graphics card that needs a special cable to work on a VGA monitor (?)
f) Quadram 384K RAM card (I have a 64-256K motherboard, all sockets are populated so I'd assume it's 256+384).