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DEM-310GT

Description: D-Link Gigabit SFP optical module, single mode, 10 km, wavelength 1310nm, LC connector
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GTIN: 88442593182 Gtin Tool Tip
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Express Delivery Across the USA

Need it fast? Choose Express Shipping and receive your order within 1–3 business days.

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Free Ground Shipping Available

Standard ground delivery across the U.S. takes 2–6 days, depending on your location — no extra charge.

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International Shipments Made Simple

For all international orders, we ship via your UPS, FedEx, or DHL account — or to your U.S.-based freight forwarder.

Delivery Timelines

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Under 100 KG? Ships Express.

Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.

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Over 100 KG? Ships via Freight.

Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.

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Always Delivered to Your Door

Every shipment is delivered directly to your address — regardless of country or carrier.

Our best-in-class warranties

3-Year Extended Warranty

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Extended protection, enterprise-grade.

All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.

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Professional repairs & replacements.

If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.

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RMA process, simplified.

Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.

Service Boundaries & Exclusions

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What’s covered — and what’s best avoided.

Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.

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Know your location’s service type.

In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.

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Minimal documentation required.

To initiate service, just submit the invoice and warranty card — no red tape, no waiting.

14-Day Money Back Guarantee

Free 14-Day Returns

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Tested it, but it’s not a fit?

Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.

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Initiate returns with ease.

Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.

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Refund or restock, your call.

Changed your mind? Get a refund (restocking fees may apply) or swap with another product.

30-Day Hardware Replacement

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Covered for any early faults.

All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.

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Replacements shipped in 10 days or less.

Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.

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RMA protocol keeps it smooth.

Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.

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Product Comparison Table

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D-Link Gigabit SFP optical module, single mode, 10 km, wavelength 1310nm, LC connector
DEM-310GT

Huawei S12704 Enhanced Engine AC Bundle ET1Z04EACC00 (Including Assembly Chassis*1,MPUA Main Board*1,SFUC Switch Fabric Unit*2,800W AC Power*2,Basic Software*1)
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Catalyst 1000 48 port GE, POE, 4x10G SFP
C1000-48P-4X-L

Depth 15.75 inches 12 inches 11 inches 12 inches 11 inches
Ethernet Technology 10/100 10/100/1000 10/100/1000 10/100/1000 10/100/1000
Flash Memory 64 MB 64 MB 64 MB 256 MB 32 MB
Form Factor Rack-mount Rack-mount Rack-mount Rack-mount Rack-mount
Height 1.73 inches 1.75 inches 1.75 inches 1.75 inches 1.75 inches
Interface Ports 10/100 10/100/1000 10/100/1000 10/100/1000 10/100/1000
IOS LAN Lite LAN Base LAN Lite LAN Base LAN Lite
Layer Supported Layer 2 Layer 2 Layer 2 Layer 3 Layer 2
Manageable Managed Managed Managed Managed Managed
Manufacturer Part Number SG250-50P JG938A DEM-310GT ET1Z04EACC00 C1000-48P-4X-L
Media Type Supported Combo Combo Twisted Pair Combo Twisted Pair / Fiber / Combo
Memory 128 MB 256 MB 256 MB 512 MB 128 MB
Number of Downlink Ports 48 Ports 8 Ports 24 Ports 24 Ports 48 Ports
Number of Ethernet Ports Over 48 Ports 24–48 Ports 24–48 Ports 24–48 Ports 24–48 Ports
POE Support POE+ POE+ POE+ Non POE POE+
Port/Expansion Slot Details 48 fixed 10/100 PoE ports and 2 10/100/1000 combo uplink ports 24 x 10/100/1000 Ethernet ports, 4 x 10G SFP+ uplink ports 24 RJ45 Ethernet ports, 4 SFP uplink ports 24 fixed 10/100/1000 Ethernet ports and 4 dedicated SFP uplink ports 48 PoE ports and 4 10G SFP+ uplink ports
Power Consumption N/A 75 W N/A 60 W 370 W
Power Source AC Power Supply Redundant Power Supply / AC Power Supply AC Power Supply Redundant Power Supply AC Power Supply
Product Name Cisco SG250-50P Smart Switch JG938A Enterprise Layer 2 Switch DEM-310GT Gigabit Managed Switch Enterprise Tier 1 Aggregation Switch ET1Z04EACC00 Cisco Catalyst 1000 Series C1000-48P-4X-L
Product Type Switch Switch Switch Switch Switch
Rack Units 1 RU 1 RU 1 RU 1 RU 1 RU
Redundant Power Supply Supported No Yes No Yes No
SFP Ports Combo 4 SFP Ports 4 SFP Ports 4 SFP Ports 4 SFP Ports
Switching Capacity 56 Gbps 128 Gbps 128 Gbps 128 Gbps 104 Gbps
Switching Capacity with Stacking 112 Gbps 256 Gbps 256 Gbps 256 Gbps N/A
Uplink Configuration 1G 10G 10G 10G 10G
Weight 12 lbs 15 lbs 12 lbs 15 lbs 14 lbs
Width 17.09 inches 17.5 inches 17.5 inches 17.5 inches 17.5 inches

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