HP original and authentic. This pen model K8P73AA, only applicable to HP models, other computers can not be used,
HP ENVY x213-j0xx, ENVYx2 13-j1xx, ENVYx2 15-cOxx,
ENVY x360 15-WOxx, ENVY x360 15-w1xx, x210-p0xx, Pavilionx2 10-j0xx, Pavilionx2 10-k0xx, Pavilionx210-n0xx, Pavilionx2 10-n1xx, Pavilionx2 10-n2xx, Pavilionx360 11-k0xx, Pavilionx360 11-k1xx, Paviliorx36013-s0xx, Pavilionx360 13-s1xx, Pavilionx360 15-bk0xx, Pavilionx360 15-bk1xx, Spectrex360 13-40xx. Spectre x360 13-41xx, Spectrex360 15-ap0xx, Pro408 G1, x2210, Spectre Pro x360 G1, Spectre Pro x360C2, HP 4505-4200M 15.66GB /10TSEA PC, HP ENVY X360 CONVERTIBLE 15-W29IMS, HP ENVY X360CONVERTIBLE 15T-W200, HP ENVYX360 REFURB CONVERTIBLE 15T-W200, HP ENVY x360 Convertible15t-w200, HP K12x2210G2Z8350102GB / 32 PC, HP PAVILION X360 CONVERTIBLE 15 - BK168CL, HPPAVILION X360 CONVERTIBLE 15 t - BK100, HP PAVILION X360 REFURB CONVERTIBLE 15T-BK100, HP PrOTablet 408 G1, HP Pro Tablet 408 23736F 8.0 2GB/32 PC, HP Pro Tablet Active Pen, HPX2 DETACHABLE10-PO12NR, HPX2 DETACHABLE 10-PO18WM PC, HPX2 DETACHABLE 10-PO20CA PC, HP X2DETACHABLE 10-P020NRPC, HPX2 DETACHABLE 10-PO92MS PC, HP x2 Detachable 10T-POOO PC, HPX2 DETACHABLE REFURB 10T-PO00 PC, HP x2 Detachable 10-p007Tu, HPx2 Detachable 10-p008TU, HPx2 Detachable 10-p009Tu, HPx2 Detachable 10-p010TU, HPx2 Detachable 10-p011TU HP x2 Detachable10-p012TU, HP x2 Detachable 10-p040TU, HP x2 Detachable 10-p041TU, HP x2 Detachable 10-p042TU.
HP x2 Detachable 10-p043TU, HP x2210G2Z8350102GB/32 PC, HPx2210G2Z8350 102GB/64 PC, HPx2210G2Z8350104GB / 128 PC, HPx2210G2Z8350104GB / 64 PC, HP x360G2 i5 13.38 CB / 128-6200 - u PCHP x360C2 5-6300U 13.38GB /128PC, HPx360G2 i7-6600U 13.38GB /512PC, HPx360 i5-6200U 13.38GB /512PC