People just don't get how small it still is (since it can be placed horizontally).
It's 15 cm or 5.94 inches tall this way.
For comparison, a Sinology Nas (which many use as a media server) is taller at 6.5 inches, and fits in most ikea-like cabinets.
Sorry, but it's not small at all. It's going to cause issues in a lot of cabinets.
Most people will find a workaround I'm sure but for comparison at 150 mm on it's side is just under double the height of the biggest current gen consoles (launch XBO) and nearly 4 times the smallest (PS4 slim) - for comparison PS4 (39mm slim and 55mm Pro) and XBO (79mm original XBO, 60mm One X) - that's bigger than a big-ass 80s VCR. I've got TVs in three rooms in the house, it won't fit the furniture in two of them.
Living room: IKEA TV table (Hemnes) as part of wall to wall units - shelf height 110 mm. Only option, maybe, would be to stand it up behind the TV.
Media Room: Also an IKEA storage unit (Besta) has a shelf height of 80mm (top shelf) and 120 mm (bottom shelf). Not enough room behind, might be able to use one of the book shelves if I drill holes for the cabling.
Bedroom: Standalone black glass and chrome TV stand, shelves are 160 mm so it will fit but take nearly the entire space.