“Tricky to solder to pads, as legs a little short, so broke a pin on one of them trying to bend it out to get enough surface to solder on to. Bought 2, and the one that I did manage to solder onto a teensy 4.1 worked well. No issues with the chip, just my clumsiness.”
“First one I've bought as most places don't offer this when you buy a teensy 4.1 board, so far it's working perfectly! Easy to install with basic skills.”
“RAM expansion for Teensy 4.x. You can use one or two on the Teensy 4.1 and you can use one on the Teensy 4.0 by using the Audio board. This makes the Teensy better at handling, for example, audio buffers. But is also usefull whenever you need more RAM.”