Never use a common consumer entertainment or IT external connector for a different purpose unless your gadget can tolerate whatever commonly has the same connector being plugged in without any damage, or your gadget will only be used by qualified technicians. This would specifically rule out any flavour of USB, 'RJ45' 8P8C, or RJ11 6P4C and RJ12 6P6C connectors unless you want to cope with idiots plugging in USB chargers, Ethernet with POE or phone lines!
For a permanent or semi-permanent installation, if you can stand the size, a 0.1" pitch 6 way female right angle header may be the way to go. Use one way for a polarising plug (insert) and omit one pin from the mating connector. That gives you two non-reversible, non-interchangeable plug/socket combos (1x3456 and 12x456) and if you use a dual row one on the PCB, is more compact than your existing jacks.