IR receiver connects to computer USB input.  Compatible with  NP-M271X/M311X/M311W, NP-M282X/M322X/M402X/M322W/M402H, NP-M283X/M323X/M363X/M403X/M323W/M363W/M403H, NP-M333XS/M353WS, NP-P401W/P451X/P451W/P501X, NP-P502WL/P502HL, NP-PA500X/PA500U/PA550W/PA600X, NP-PH1000U/PH1400U, NP-PX700W/750U/800X,NP-UM330X/UM330W,  NP-UM330Xi-WK1/UM330Wi-WK1 and NP-UM330Xi-WK/UM330Wi-WK remotes