Arrived today and my first thought was "it's massive". It is replacing an older PCTV 292e that just stopped working one day and this adapter is twice the size of the old one. But this is dual tuner and it comes with a decently long USB extension cable so there is no problem with clearance where multiple USB ports are close to each other - looking at you raspberry pi. Plugged in to my rpi4 and was immediately detected as a dual tuner and various firmware files were upgraded. Was pre-set to bulk transfer mode out of the box. I'm running libreelec 11 on the rpi with tvheadend server and client installed and enabled and it did take an hour or two to get tvheadend to do the right thing with them but I got there in the end. That's more a tvheadend configuration problem though, not this device.I had tvheadend recording up to 8 different programs at the same time and using both tuners, writing the recordings to NFS mounted shares over the network and writing around 30MB/s to disk. I did have to pick 8 channels that were all on the same 2 MUXes but 7 of those channels were the HD ones. Rpi4 was running at about 20% cpu during this. All recordings played back successfully and other than right at the start of each recording, all seem to be unpixellated and of excellent quality.