Yes, that fits

Hello, I don't know. Have you tested it on several machines with different OS? It could be a driver problem for a motherboard chipset or a silly virus. Good luck

Sali I use the WD Green M.2 2280 mostly with Lindy m.2 adapters in various notebooks. The device can be used without problems with the adapter and cable: StarTech USB 3.1 (0.50m) Lindy m.2 NGFF to SATA Adapter

According to the specification, the M2_2 slot accepts SATA SSD: 1 x M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)**. M2_1 from your board only takes NVME. However, the WD Green has no DRAM cache and 128 GB is also quite low. Depending on the intended use, I would recommend an SSD with at least 256GB and DRAM cache (e.g. WD Blue 3D NAND, Crucial MX500 etc).

It depends on what games you play. But I would recommend at least 512GB. COD, for example, can easily consume 170GB, GTA also about 70GB.

Effectivement 545mo/s en lecture: https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-green-ssd/data-sheet-wd-green-ssd-2879-800083.pdf

Yes, it should fit. https://www.crucial.com/usa/en/compatible-upgrade-for/Lenovo/yoga-710-14ikb As long as the laptop has an M.2 2280 solt, any M.2 2280 card will fit. However, I don't know if this laptop has an additional, unoccupied M.2 slot.

480gb WDS480G2G0B https://www.wd.com/en-ie/products/internal-ssd/wd-green-ssd.html

Hello, unfortunately Digitec Galaxus only delivers in Switzerland and Liechtenstein. So, either you have a delivery address on the territory, or you can go to one of the brand's shops, sorry.

Yes, it is even recommended, as Windows loads much faster.