Tested with 32GB, 64GB, and 128GB SD cards on a Windows 10 PC. (Not tested with Lightning.) The device gets slightly warm during use. Device only. Please purchase only if you understand this. No returns or refunds. - Equipped with a slot that can connect SD cards up to 256GB - USB 3.0 allows data transfer speeds of 80 MB/s read and 30 MB/s write - Lightning connector allows data transfer speeds of 80 MB/s read and 30 MB/s write - Compact and convenient to carry - Brand: RAVPOWER - Model Number: RP-IM019 - Color: Silver - Type: SD Card Reader, Writer - Connection Type: Lightning, USB Thank you for viewing.