Before you buy this item, in order to avoid some unnecessary troubles,you must read those tips at first . Please note: Please make sure your device is compatible with the extension, otherwise it cannot be used. The Type-C interface of the laptop must be Thunderbolt 3 or support the USB3.1 protocol.HDMI function requires Type-C interface to support Display mode There are 4 models available, please choose suitable model according to your needs: (1) 14 in 1 Hub : VGA 1080P + RJ45 1000Mbps + HDMI 4K + 3.5mm Audio + SD/TF + 3*USB3.0 + 2*USB2.0 +Type-C + PD 87W USB-C Mouth (2) 12 in 1 Hub : VGA 1080P + RJ45 100Mbps + 2*HDMI 4K + 3.5mm Audio + SD/TF + 2*USB3.0 + PD 87W USB-C Mouth (3) 11 in 1 Hub : VGA 1080P + RJ45 1000Mbps + HDMI 4K + 3.5mm Audio + SD/TF + 3*USB3.0 + Type-C + PD 87W USB-C Mouth (4) 8 in 1 Model: RJ45 100Mbps + HDMI 4K + Type-C + SD/TF+2*USB3.0+PD 87W USB-C Mouth HDMI supports 4K 30HZ, VGA supports 1080P,PD charging: supports maximum of 100W. IMPORTANT NOTE - Especially for Type C Port Laptop/Tablets/Phone - Please ensure the Laptop has tb 3 / USB-C 3.1 Gen 2 /USB-C 3.1 Gen 1 (Support Power Delivery) to support multiple-display before purchase. - To use the HDMI output port, the host USB-C port from your device must support DisplayPort Alt Mode. - Not support charging for HP laptops and tablets via the PD USB-C charging port. - For a stable connection, do not use this hub with high-power devices. It supports one hard drive max. - All USB ports support Charging and Data Transfer. - When the mobile phone / tablet uses the hub for data reading or Screen Extension Display, the phone/tablet itself needs to support the OTG function. Note: If your laptop isn't in the compatilbe list, You MUST make sure the host USB-C port on your laptop is full-featured USB-C. Full-Featured USB-C:USB3.0/USB 3.1 + DP(Display Port) + PD(Power Delivery). 8 in 1 HUB Features: 8 in 1 USB C hub makes things much easier, you do not need to carry many different simple hub types or a clumsy docking station any more . You can stream HD video to your monitor/projector/TV through 4K HDMI port ; 1 . HDMI-Compatible :4K " 2K ( 3840 " 2160 ) . Downwards Compatible With 108OP 720P etc . 2 . USB * 3.0 : Hight speed USB , Power supply up to 4 . 5w max , 3 . USB C Femate Port 1: 20V @ 3A , Support max 87W power adapter . 4 USB C Male : Compatible With thunderboil 3 , Make sure that the host USB C on your device compIies with the USB3.0/3.1 Specification 5 . SD/TF Card Reader : Support multiple types of TF and SD cards, SD card and TF card cannot used at the same time . 6 . VGA :1 080P @ 60Hz , downward compatible with 1080P , 1080I , 720P HDTV and VGA support 1080P simultaneous output . 11 in 1 HUB Features: 1 . HDMI-Compatible:4K " 2K ( 3840 " 2160 ) . Downwards Compatible With 108OP 720P etc . 2 . USB * 3.0 : Hight speed USB , Power supply up to 4 . 5w max , 3 . USB C Femate Port 1: 20V @ 3A , Support max 87W power adapter . USB C Femate Port 2: Hight speed USB-C, Power supply up to 4 . 5w max , 4 USB C Male : Compatible With thunderboil 3 , Make sure that the host USB C on your device compIies with the USB3.0/3.1 Specification 5 . Ethernet : 10 / 100 Ethernet 6 . SD/TF Card Reader : Support multiple types of TF and SD cards, SD card and TF card cannot used at the same time . 7 . VGA :1 080P @ 60Hz , downward compatible with 1080P , 1080I , 720P HDTV and VGA support 1080P simultaneous output . 8 . DC 3.5mm AUdio :3.5mm Audlo Output Comply with USB C interface specification built in conversion chip , pLug and ptay 12 in 1HUB Features: 1 . HDTV X2: 4K " 2K ( 3840 " 2160 ) . Downwards Compatible With 108OP 720P etc . 2 . USB * 3 : Hight speed USB . Power supply up to 4 . 5W max . 3 . USB C Female Part1 20V@3A . Support max 87W power adapter . USB C Female Port 2 Hight speed USB C . Power supply up to 4.5W max . 4.USB C male : Compatible with thunderboiI 3 , Make sure that the host USB-C on your device compIies with the USB 3.0/3.1 Specification 5 . Ethernet: 10/100 Ethernet(Not support 1000M) 6 . SD/TF Card Reader : SD&TF can work simultaneously . Read and write speed depends On card's quality . 7 . VGA 1080P@6OHz . downward compatible wlth 1080P . 1080I . 720P 8 . DC3.5 Audio (when audio output,it can not work with HDMI port) 3.5mm Audio OutPut Note:Just support one HDMI port4K resolution 14 in 1 HUB Features: TYPE C to USB3.0*3+USB2.0*2+VGA+RJ45+SD+TF+Hearphone jack+HDMI+USB-C DATA*2 +USB-C PD 1. USB-C 1: PD 60W on technical standard 2. USB-C 2: Gen 1, 5Gbps 3. USB-C 3: Gen 1, 5Gbps 4. HDMI-Compatible: Max 4K UHD 3840*2160@30HZ(downward to 2k@60hz when work with VGA) 4. VGA: 1080p 2k@60hz 5. USB: Up to 5Gbps, 5USB ports working simultaneously. 6. RJ45 : Up to 1000M 7. SD &TF: Support 2 cards reading simultaneously 8. Hearphone Jack: 3.50mm audio and mic , It can be output and input simultaneously 9. Ne