I bought an SBLIVE Platinum with a front panel.

The front panel has MIDI IN/OUT ports so I bought 2 MIDI cables but when I went to plug my keyboard into the SBLIVE front panel, the MIDI cable were too big.

I called some music stores and they said all MIDI cables are the same size and should fit but it doesn't.

What kind of cables do I use to hook from my keyboard into the front panel?

Is there a such thing as mini-MIDI cables?