Alternative to 300-1543: Better-Value Equivalents in Stock
Comparing the 300-1543 (300-1543 - Sun 420-Watts AC Input Power Supply) against alternatives? Pro Disk Network stocks 12 similar parts that offer comparable performance at different price points. Each option below is in-stock, US-warehoused, and tested-and-certified before ship. Bulk pricing is available on quantities of 5+; B2B procurement can use Net 30 with PO.
About the 300-1543
| SKU | 300-1543 |
|---|---|
| Product | 300-1543 - Sun 420-Watts AC Input Power Supply |
| Current price | $1,742.87 |
| Stock status | In Stock |
| Detail page | View 300-1543 › |
Alternatives to 300-1543
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
DWDM-XFP-1543.73 - Cisco 10GBase DWDM OC-192/STM-64/10G SONET ER 40km 1543.73nm XFP Transceiver Module
SKU: DWDM-XFP-1543.73
Price: $2,655.96
DWDM-GBIC-1543.73 - Cisco 1.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1543.73nm SC Connector GBIC Transceiver Module
SKU: DWDM-GBIC-1543.73
Price: $3,144.07
DWDM-XFP-1543.73-J - Juniper 10GBase DWDM OC-192/STM-64/10G SONET ZR 80km 1543.73nm XFP Transceiver Module
SKU: DWDM-XFP-1543.73-J
Price: $3,757.51
XTA-3000-2UAC-KIT - Sun Microsystems 420-Watts AC Input Power Supply
SKU: XTA-3000-2UAC-KIT
Price: $392.99
XTA-3000-2UDC-KIT - Sun Microsystems 420-Watts DC Input Power Supply
SKU: XTA-3000-2UDC-KIT
Price: $630.54
300-1568-01 - Sun 400-Watts AC Input Power Supply Type A178 for Sun Fire V240
SKU: 300-1568-01
Price: $143.39
300-1568 - Sun 400-Watts AC Input Power Supply Type A178 for Sun Fire V240
SKU: 300-1568
Price: $163.16
300-1945-02 - Sun 500-Watts Redundant AC-Input Single Power Supply for Sun Fire V215/V245/V445/T1000/T2000 & NETRA T2000
SKU: 300-1945-02
Price: $182.37
How we pick alternatives
Every recommendation above was selected using these criteria:
- Spec parity — capacity, speed, port count, and form factor matched within a 10% tolerance
- Price spread — alternatives shown across the price range, so you can pick on budget
- Brand mix — both OEM-equivalent and trusted aftermarket, all certified
- Reliability data — preferred parts have failure rates below 1% in our 18-month return tracking
- In stock today — shipping today, not 4-6 weeks from now
Want a side-by-side spec comparison?
We can prepare a written comparison covering throughput, power draw, form factor and validated compatibility. Email sales@prodisknetwork.com or call +1 (407) 205-8454 — most quotes ship within 4 business hours.