SanDisk 64GB Extreme SDXC UHS-I Memory Card - C10, U3, V30, 4K, UHD, SD Card - SDSDXV2-064G-GNCIN
Save time with card offload speeds of up to 170MB/s powered by SanDisk QuickFlow Technology (Up to 170MB/s read speed. Engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, and 512GB capacities. 1GB=1,000,000,000 bytes. Actual user storage less.)
Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately)
Write speeds up to 80MB/s (Engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.)
Perfect for shooting 4K UHD video and sequential burst mode photography (Full HD (1920x1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site.)
Capture uninterrupted video with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (UHS Speed Class 3 designates a performance option designed to support 4K UHD video recording with enabled UHS host devices. UHS Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS enabled host devices. See the SD Association’s official website.)

10Gtek 1000BASE-SX Gigabit SFP LC Multi-Mode Transceiver, Mini-GBIC Module for Cisco GLC-SX-MMD/GLC-SX-MM/SFP-GE-S, Ubiquiti UniFi UF-MM-1G, Meraki, Fortinet, TP-Link, 850nm, DDM, 550m, Pack of 2
1000BASE-SX SFP to LC Optical Gigabit Ethernet Fiber transceiver module, 1.25G Multimode SFP(supports OM1/OM2/OM3/OM4 fiber cables), Duplex LC connector, 850nm, DDM, up to 550m.
[Wide Compatibility] Compatible with Cisco GLC-SX-MMD/GLC-SX-MM/SFP-GE-S, Meraki MA-SFP-1GB-SX, Ubiquiti UniFi UF-MM-1G, Mikrotik S-85DLC05D, Fortinet, D-Link, Supermicro, Netgear AGM731F, TP-Link TL-SM311LM, Broadcom, Linksys and Other Open Switches. Widely support Gigabit Ethernet, Fiber Channel, Other Optical Links and other devices.
[Easy to Use] Easy installation, plug and play, fully hot-pluggable with ESD protection. Widely used in fiber switches, routers, NIC, server or other fiber optic equipments with 1Gbps SFP ports. SFP MSA Compliant, IEEE 802.3ab Compliant.
[Superior DDM Monitoring] DDM allows you to monitor the critical information concerning the status of the transmitted and received signals of the transceivers in real-time to find out some potential problems. Operating Temperature: 0°C to 70°C.
[What you Get] 2x 100% tested 1000Base-SX modules, 30-day Money-Back guarantee with 3-Year warranty and lifetime tech support. 10Gtek is a manufacturer of transceiver, customized service is available.

With success for the German test for the profession B2: exercise book + online
With success to the German test for the occupation B2: exercise book + online