HP Prime too complicated

[fablab48]

this calculator is not so bad.
but, !!!

after serveral crash, it was decided to not allow this machine,
the reason was bug during exam

in my opinion, i decided to stop using it, but for other reason :
-the keyboard colors ( new one seem better, but i have the old revision)
- there is no serial port --> for an electronician this is critical

i firstly take a look to the "NUMWORK CALCULATOR", this machine have a serial port, it's particularly quick and there is the communication port

BUT, !!!
there is no RPL

and this is a critical point for me too

so,
i decided to return to my HP-48-GX,
(and i bought 5 others on internet, there are cheap in France, about 70 euros).

The HP-PRIME micro own several communication port, we can see it on the PCB.

---TO THE HP TEAM ---
add a serial port connector like T.I and NUMWORKS do and i will return to PRIME.