HP Laser Jet Q7551XD black print cartridge is ideal when productivity counts. When you produce dependable, low-maintenance results each time you print, you are at an advantage
- fewer interruptions means time saved & a more efficient working practise. Designed to minimize interruptions, you get reliable HP Laser Jet printing technology with every cartridge. HP Smart printing technology automatically optimizes print settings & provides alerts when supplies are low.
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Get your printing right the first time & every time. Enjoy reliable, cost-effective, professional results with original HP Laser Jet cartridges. ...

Enjoy low-cost high-volume printing with HP genuine toner cartridges. This Laser Jet cartridge has a duty cycle of 3000 pages making it an ideal choice for businesses or home power users. With such a high yield it provides exceptional value for your money &, at a cost per page of just 2p, very low printing costs. Perfect for the modern office were the printer is usually busy throughout the day. Official toner Like all other genuine HP consumables the 53A toner cartridge delivers great results with professional quality documents produced every time. HP toner is specifically formulated for use in their own Laser Jet printers achieving consistent ink coverage & crisp text from the first page to the last. The dangers of using unofficial products in your HP printer Imitation toner from other manufacturers can not only leak inside the printer damaging components, but will also deliver an inferior print quality. For the best quality results always use genuine HP toner. Recycling with HP What to do with toner cartridges at the end of their life is an issue for every business. But HP provide a free recycling service which is easy & convenient to use. Full details are in the pack. Key features Black toner One cartridge in the pack Duty cycle of 3000 pages Official HP product Free recycling Compatible with HP Laser Jet M2727nf MFP, M2727nfs MFP, P2014, P2014n, P2015, P2015d, P2015dn, P2015n, P2015x ...

HP Q7553XD dual pack black laser toner cartridge for use with Laserjet P2015 & M2727nf printers. As you print more, HP helps reduce your company's printing costs with an option designed for customers who print high-volumes
- HP Laser Jet Print Cartridge Dual Packs. You get the same consistent, professional results & reliable, trouble-free printing of original HP. & you get double the print volume at a lower price with this convenient, high-value option.
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The solution to all your photo printing needs HP Laserjet cartridges will take care of your most demanding print jobs in the least time. HP Laserjet cartridges are designed in partnership with HP printers to give you the best quality, smudge free documents, prints & copies saving you time, money & energy. Your HP cartridge is designed with the latest technology from the finest toner particles to the bonding on the paper & because the toner units are fully enclosed you need not worry about mess or replacing separate components for your printer. Highly efficient toner use – HP Laser Jet print cartridges consistently deliver on yield. High page yields mean fewer cartridges Exceptional cartridge & printer reliability results in less downtime & increased productivity Minimal support costs & fewer supplies-related service calls With our recycling programme 95% of returned cartridge materials can be reclaimed & reprocessed so you can be assured we are doing our bit for the environment too ...

The Switch 5400zl Series consists of the most advanced intelligent edge switches. The foundation for this switch is a purpose-built, programmable Pro Vision ASIC that allows the most demanding networking features, such as Qo S & security, to be implemented in a scalable yet granular fashion. With a variety of Gigabit interfaces, integrated Po E on all 10/100/1000 Base-T ports, & a choice of form factors, the 5400zl switch offers excellent investment protection, flexibility, & scalability, as well as ease of deployment, operation, & maintenance. ...

The HP 5500 HI Series of Gigabit Ethernet switch delivers outstanding resiliency, security, and multiservice support capabilities at the edge layer of data center, large campus, and metro Ethernet networks. The switch can also be used in the core layer of SMB networks. The HP 5500 HI Switch Series supports dual power supply & IRF virtual fabric to provide the highest levels of resiliency & manageability. With complete IPv 4/IPv 6 & MPLS/VPLS features, this series provides investment protection with an easy transition from IPv 4 to IPv 6 networks. Features Layer 2 switching DHCP support ARP support MPLS support auto-uplink (auto MDI/ MDI-X) IPv 6 support Spanning Tree Protocol (STP) support Rapid Spanning Tree Protocol (RSTP) support Virtual Route Redundancy Protocol (VRRP) support Multiple Spanning Tree Protocol (MSTP) support Quality of Service (Qo S) Rapid Ring Protection Protocol (RRPP) support Equal-Cost Multipath (ECMP) Bidirectional Forwarding Detection (BFD) STP Root Guard IPv 4 support Advanced classifier-based Qo S Classifies traffic using multiple match criteria based on Layer 2, 3, and 4 information;applies Qo S policies such as setting priority level & rate limit to selected traffic on a per-port or per-VLAN basis. Traffic policing Supports Committed Access Rate (CAR) & line rate. Storm restraint Allows limitation of broadcast, multicast, and unknown unicast traffic rate to cut down on unwanted broadcast traffic on the network. Friendly port names Allows assignment of descriptive names to ports. Complete session logging Provides detailed information for problem identification & resolution. Remote configuration & management Available through a secure web browser or a comm&-line interface (CLI). Manager & operator privilege levels Enables read-only (operator) & read-write (manager) access on CLI & web browser management interfaces. Management VLAN Segments traffic to & from management interfaces, including CLI/telnet, a web browser interface, and SNMP. Command authorization Leverages RADIUS to link a custom list of CLI commands to an individual network administrator's login;also provides an audit trail. Secure web GUI Provides a secure, easy-to-use graphical interface for configuring the module via HTTPS SNMPv 1, v 2c, and v 3:facilitate centralized discovery, monitoring, and secure management of networking devices. Remote monitoring (RMON) Uses standard SNMP to monitor essential network functions;supports events, alarm, history, and statistics group plus a private alarm extension group. Remote intelligent mirroring Mirrors ingress/egress ACL-selected traffic from a switch port or VLAN to a local or remote switch port anywhere on the network. Auto-MDIX Automatically adjusts for straight-through or crossover cables on all 10/100 & 10/100/1000 ports. Packet storm protection Protects against broadcast, multicast, or unicast storms with user-defined thresholds. Ethernet OAM Provides a Layer 2 link performance & fault detection monitoring tool, which reduces failover & network convergence times. Flow control Using standard IEEE 802.3x, it provides back pressure to reduce congestion in heavy traffic situations. Jumbo packet support Supports up to 9216-byte frame size to improve the performance of large data transfers. Hardware-based wire-speed access control lists (ACLs) Feature-rich ACL implementation (TCAM-based) helps ensure high levels of security & ease of administration without impacting network performance. Separate data & control paths Keeps control separated from services & keeps service processing isolated;increases security & performance. Device Link Detection Protocol (DLDP) Monitors link connectivity & shuts down ports at both ends if unidirectional traffic is detected, preventing loops in STP-based networks. Rapid Ring Protection Protocol (RRPP) Connects multiple switches in a high-performance ring using standard Ethernet technology;traffic can be rerouted around the ring in less than 50 ms, reducing the impact on traffic & applications. Virtual Router Redundancy Protocol (VRRP) Allows groups of two routers to dynamically back each other up to create highly available routed environments. Dual flash images Provides independent primary & secondary operating system files for backup while upgrading. Multiple configuration files Allows multiple configuration files to be stored to a flash image. IEEE 802.1AB Link Layer Discovery Protocol (LLDP) Automated device discovery protocol provides easy mapping using network management applications. IPv 6 management Future-proofs networking, as the switch is capable of being managed whether the attached network is running IPv 4 or IPv 6;supports pingv 6, tracertv 6, Telnetv 6, TFTPv 6, DNSv 6, and ARPv 6 ...

These Gigabit Ethernet switches deliver outstanding security, reliability, & multiservice support capabilities for robust switching at the edge or aggregation layer of large enterprise & campus networks, or in the core layer of SMB networks. The HP 5500 EI Switch Series is comprised of Layer 2/3 Gigabit Ethernet switches that can accommodate the most demanding applications & provide resilient & secure connectivity as well as the latest traffic prioritization technologies to enhance applications on convergent networks. With complete IPv 4/IPv 6 dual-stack support, the series provides a migration path from IPv 4 to IPv 6 & has hardware support for IPv 6. Designed for increased flexibility, these switches are available with 24 or 48 Gigabit Ethernet ports. Power over Ethernet (Po E) & non-Po E models are available with optional Gb E & 10 Gb E expansion capability. The all-fiber model with dual power supplies is ideal for applications that require the highest availability. High expandability for investment protection Premium security & integrated management Multilayer reliability Convergence-ready support Outstanding Quality of Service (Qo S) ...

These Gigabit Ethernet switches deliver outstanding security, reliability, & multiservice support capabilities for robust switching at the edge or aggregation layer of large enterprise & campus networks, or in the core layer of SMB networks. The HP 5500 EI Switch Series is comprised of Layer 2/3 Gigabit Ethernet switches that can accommodate the most demanding applications & provide resilient & secure connectivity as well as the latest traffic prioritization technologies to enhance applications on convergent networks. With complete IPv 4/IPv 6 dual-stack support, the series provides a migration path from IPv 4 to IPv 6 & has hardware support for IPv 6. Designed for increased flexibility, these switches are available with 24 or 48 Gigabit Ethernet ports. Power over Ethernet (Po E) & non-Po E models are available with optional Gb E & 10 Gb E expansion capability. The all-fiber model with dual power supplies is ideal for applications that require the highest availability. High expandability for investment protection Premium security & integrated management Multilayer reliability Convergence-ready support Outstanding Quality of Service (Qo S) ...

Maximise the performance of your HP Laser Jet with this genuine toner cartridge. This high-quality cartridge delivers outstanding results with finely detailed images & text; professional grade documents can be delivered even on very high-volume print runs with every page, from first to last, of the same great quality. Designed for high-volume print runs The HP 55A can produce up to 6000 printed pages &, with such a high duty cycle, is ideal for those businesses & organisations that pump out a large number of documents. When printing in high volumes it is incredibly frustrating when the toner suddenly runs out. This usually happens half way through the print run! But, with HP’s smart printing technology, you will be alerted when the toner levels get low, giving plenty of time to ensure another cartridge is available. Only HP toner delivers consistent, professional results Using genuine HP toner cartridges with your Laser Jet makes great sense. Not only will your printed documents be of the highest quality, but the specially formulated toner will ensure trouble-free printing. Cheaper, unofficial toner can damage the printer & will deliver poor results. Always use genuine HP products with your Laser Jet. Key features of the HP 55A Official HP product Black Up to 6000 page duty cycle One cartridge in the pack Designed to be used with HP Laser Jet Enterprise 500 MFP M525dn, 500 MFP M525f, flow MFP M525c, P3015, P3015d, P3015dn, P3015n, P3015x ¦ HP Laser Jet Pro MFP M521dn, MFP M521dw ...