1. USB 3.0 interface, compatible with USB 2.0 / 1.1. 2. Support SD / SDHC / SDXC MMC II / RS MMC card, Micro SD / Micro SDHC / Micro SDXC / TF card (not included). 3. No external power required. 4. LED light clew read and write state. 5. Plug-and-Play USB connectivitySpecification: General Compatible with Apple: iMac 27inch A2115 5K (2020), iMac 27inch A2115 5K (2019), iMac 21.5inch A2116 4K (2019), iMac 21.5inch A1418 (Mid 2017), iMac 27inch A1419 (Mid 2015), iMac 21.5inch A1418 (Late 2015), iMac 21.5inch A1418 (2013), iMac 27inch A1419 (2012-2013), iMac 27inch A1312 (Mid 2011), iMac 21.5inch A1311 (Mid 2011), iMac 21.5inch A1311 (Mid 2010), iMac 27inch A1312 - Late 2009 (EMC 2309), iMac 21.5inch A1311 (Late 2009) Lenovo: Z410, K4450, K2450, E455, E545, X240, T431S, S210T, M4400S, X230S, Z505, S410P, X230i, V4400U, E430, K4350A, E535, T430, X220i ThinkPad: T480s, X1 Yoga 2018, S2 Yoga 2018, T580, S2 2018, S1 2018, X1 Carbon 2018, E580, A275, A475, E480, T480, T470s, T470, X1 Carbon 2017, T470p, T570, E475, X270, P51s, E575, E570C, X1 Yoga 2017, E470C, E570, E470, T560, T460P, T460s, T460, X1 Carbon 2016, X1 Tablet, E560, X260, E565, E460, E465, T550, E555, T450s, T450, E550, E531, E431 ASUS: Transformer Pad TF303CL Acer: SF315-51G-52A8, PH317-51-772 / Helios 300, A715-71G-78Z8, AN515-51-50MK, Iconia One 8 / B1-850, PT715-51-76BB, TMP278, VN7-793G-766H, GX-791-77CF Material ABS Interface USB 3.0, SD card slot, TF card slot Operating System Windows 2000, Windows XP, Windows 7, Windows Vista, Windows 8 Size 6*1.7*0.85cm Weight 8g Package Weight One Package Weight 0.03kgs / 0.06lb One Package Size 14cm * 8cm * 1cm / 5.51inch * 3.15inch * 0.39inch Qty per Carton 300 Carton Weight 6.80kgs / 14.99lb Carton Size 30cm * 18cm * 27cm / 11.81inch * 7.09inch * 10.63inch Loading Container 20GP: 1828 cartons * 300 pcs = 548400 pcs40HQ: 4245 cartons * 300 pcs = 1273500 pcs