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.