Oh, so he didn't quite get good universal placement for the microSD slot for all the many iterations of NEC hardware...
I almost thought it's not just for the RX - looking at my TurboExpress just now and the green mold of the power switch to hold the card in, it's like RIGHT THERE, it almost could touch the microSD card, I thought it was! Barely avoided putting pressure on it. Yeah, he needed to have moved that IC behind it more to the center, then he could've done the same for it... Or, he could've moved it and the reset button a little closer to the USB front center and that would've been good enough...
Sigh, so a minor slot placement issue there, major no-compatibility issue with US TG-16s, he screws up $1,XXX+ orders if more than one shipping address is added with special instructions, etc... And he didn't pull the lever on going for Arcade Card support though he considered it... All in all, a little disappointing... :/ It's fine for me given my Express and Duo (the TG-16 I won in a contest broke on me in the 90's), and the bizarre order mix-up is forgivable since it worked out, but I'm sure there are others expressing far worse buyer's remorse right now.