Motorola PMLN6066A accessory port cover DP2400, DP2600, XPR3300 and XPR3500 
[not DP2400e, DP2600e, XPR3300e and XPR3500e, which use part 0104058J40]
 
 

They will also substitute for the physically identical PMHN4178A shipped with MTP3000 TETRA series


Motorola original, not Chinese copies.

I will combine shipping costs if you buy more than one item, message me before buying or eBay will probably force you to pay postage for each.