1. USB 3.0 super speed up to 5Gbps (speed performance may vary depending on different testing environment). 2. Support memory cards: CF, M2, MS / SD/ SDHC / SDXC, M2, XD, Micro SD / Micro SDHC / Micro SDXC / TF card (not included). 3. System requirement: Desktop or notebook computer with a working USB port 2.0/ 3.0. 4. Pocket size, easy to carry.Specification: 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 SD card slot, TF card slot, Micro USB 3.0, MS card slot, CF card slot, XD card slot, M2 card slot Operating System Windows 2000, Windows XP, Windows 7, Windows Vista Cable Length About 50cm Size 95*50*13mm Weight 37g Package Weight One Package Weight 0.11kgs / 0.24lb One Package Size 22cm * 16cm * 6cm / 8.66inch * 6.3inch * 2.36inch Qty per Carton 60 Carton Weight 5.28kgs / 11.64lb Carton Size 62cm * 42cm * 42cm / 24.41inch * 16.54inch * 16.54inch Loading Container 20GP: 243 cartons * 60 pcs = 14580 pcs40HQ: 566 cartons * 60 pcs = 33960 pcs